More than a petabyte of data lies exposed online because of weak default settings and other configuration problems involving enterprise technologies.

Swiss security firm BinaryEdge found that numerous instances of Redis cache and store archives can be accessed without authentication. Data on more than 39,000 MongoDB NoSQL databases is similarly exposed.

More than 118,000 instances of the Memcached general-purpose distributed memory caching system are also exposed to the web and leaking data, according to Binary Edge. Finally, 8,000-plus instances of Elasticsearch servers responded to probes.